| Computer worm A computer worm is a self-replicating computer program. It uses a network to send copies of itself to other nodes (computers on the network) and it may do so without any user intervention. Unlike a virus, it does not need to attach itself to an existing program. Worms almost always cause at least some harm to the network, if only by consuming bandwidth, whereas viruses almost always corrupt or devour files on a targeted computer. Computer_worm
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| Common Gateway Interface The Common Gateway Interface (CGI) is a standard protocol for interfacing external application software with an information server, commonly a web server.The task of such an information server is to respond to requests (in the case of web servers, requests from client web browsers) by returning output. Common_Gateway_Interface
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| Domain Name System The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with the domain names assigned to each of the participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world-wide. Domain_Name_System
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| E-mail Electronic mail, often abbreviated as email or e-mail, is a method of exchanging digital messages, designed primarily for human use.An electronic mail message consists of two components, the message header, and the message body, which is the email's content. The message header contains control information, including, minimally, an originator's email address and one or more recipient addresses. Usually additional information is added, such as a subject header field. E-mail
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| Electronic Data Interchange Electronic Data Interchange (EDI) refers to the structured transmission of data between organizations by electronic means. It is used to transfer electronic documents from one computer system to another (ie) from one trading partner to another trading partner. Electronic_Data_Interchange
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| JavaScript Talk:JavaScript
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| Foobar The terms foobar, foo, bar, and baz, are common placeholder names (also referred to as metasyntactic variables) used in computer programming or computer-related documentation. They are commonly used to represent unknown values, typically when describing a scenario where the purpose of the unknown values are understood, but their precise values are arbitrary and unimportant. Foobar
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| Gopher (protocol) The Gopher protocol is a TCP/IP Application layer protocol designed for distributing, searching, and retrieving documents over the internet, and was an alternative to the World Wide Web. The protocol offers some features not natively supported by the Web and imposes a much stronger hierarchy on information stored on it. Its text menu interface is well-suited to computing environments that rely heavily on remote computer terminals, common in universities at the time of its creation in 1991 until 1993. Gopher_(protocol)
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| HTML HTML, an initialism for Hypertext Mark-up Language, is the predominant markup language for web pages. It provides a means to describe the structure of text-based information in a documentinteractive forms, embedded images, and other objects. HTML is written in the form of "tags" that are surrounded by angle brackets. HTML
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| Hypertext Transfer Protocol Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. Its use for retrieving inter-linked resources led to the establishment of the World Wide Web.HTTP development was coordinated by the World Wide Web Consortium and the Internet Engineering Task Force (IETF), culminating in the publication of a series of Requests for Comments (RFCs), most notably RFC 2616 (June 1999), which defines HTTP/1.1, the version of HTTP in common use. Hypertext_Transfer_Protocol
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| Harald Tveit Alvestrand Harald Tveit Alvestrand (born 29 June, 1959) is a Norwegian computer scientist. He was the chairman of the Internet Engineering Task Force from 2001 until 2005. He is an author of several important RFCs, many in the general area of Internationalization and localization.He was born in Namsos, Norway, received his education from Bergen Katedralskole and the Norwegian Institute of Technology, and has worked for Norsk Data, UNINETT, EDB Maxware and Cisco Systems, Inc..Trondheim, Norway, and works for Google. Harald_Tveit_Alvestrand
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| HTTP Secure Hypertext Transfer Protocol Secure (HTTPS) is a combination of the Hypertext Transfer Protocol and a cryptographic protocol. HTTPS connections are often used for payment transactions on the World Wide Web and for sensitive transactions in corporate information systems.HTTP operates at the highest layer of the TCP/IP model, the Application layer; but the security protocol operates at a lower sublayer, encrypting an HTTP message prior to transmission and decrypting a message upon arrival. HTTP_Secure
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| History of the Internet Before the widespread internetworking that led to the Internet, most communication networks were limited by their nature to only allow communications between the stations on the local network and the prevalent computer networking method was based on the central mainframe computer model. History_of_the_Internet
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| H.263 H.263 is a video codec standard originally designed as a low-bitrate compressed format for videoconferencing. It was developed by the ITU-T Video Coding Experts Group (VCEG) in a project ending in 1995/1996 as one member of the H.26x family of video coding standards in the domain of the ITU-T. H.263
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| Internet Internet is a global system of interconnected computer networks that use the standardized Internet Protocol Suite (TCP/IP). It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic cables, wireless connections, and other technologies.The Internet carries a vast array of information resources and services, most notably, the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support electronic mail, in addition to popular services such as online chat, file transfer and file sharing, online gaming, and Voice over Internet Protocol (VoIP) person-to-person communication via voice and video. Internet
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| Internet Relay Chat Internet Relay Chat (IRC) is a form of real-time Internet text messaging (chat) or synchronous conferencing. It is mainly designed for group communication in discussion forums, called channels, but also allows one-to-one communication via private message as well as chat and data transfers via Direct Client-to-Client.As of May 2009, the top 100 IRC networks served more than half a million users at a time, with hundreds of thousands of channels (the vast majority of which stand mostly vacant), operating on a total of roughly 1,500 servers worldwide. Internet_Relay_Chat
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| Internet standard computer network engineering, an Internet Standard (STD) is a normative specification of a technology or methodology applicable to the Internet. Internet Standards are created and published by the Internet Engineering Task Force (IETF). Internet_standard
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| IP address Internet Protocol (IP) address is a numerical identification and logical address that is assigned to devices participating in a computer network utilizing the Internet Protocol for communication between its nodes. Although IP addresses are stored as binary numbers, they are usually displayed in human-readable notations, such as 208.77.188.166 (for IPv4), and 2001IPv6). IP_address
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| Internet Engineering Task Force Internet Engineering Task Force (IETF) develops and promotes Internet standards, cooperating closely with the W3C and ISO/IEC standard bodies and dealing in particular with standards of the TCP/IP and Internet protocol suite. It is an open standards organization, with no formal membership or membership requirements. Internet_Engineering_Task_Force
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| IPv6 Internet Protocol version 6 (IPv6) is the next-generation Internet Layer protocol for packet-switched internetworks and the Internet. IPv4 is the dominant Internet Protocol version, and was the first to receive widespread use. In December 1998, the Internet Engineering Task Force (IETF) designated IPv6 as the successor to version 4 by the publication of a Standards Track specification, RFC 2460. IPv6
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| International standard International standards are standards developed by international standards organizations. International standards are available for consideration and use, worldwide.International standards may be used either by direct application or by a process of modifying an international standard to suit local conditions. International_standard
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| Internet Protocol Suite Internet Protocol Suite (commonly known as TCP/IP) is the set of communications protocols used for the Internet and other similar networks. It is named from two of the most important protocols in itTransmission Control Protocol (TCP) and the Internet Protocol (IP), which were the first two networking protocols defined in this standard. Internet_Protocol_Suite
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| Internet Protocol Suite Talk:Internet_Protocol_Suite
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| Joyce K. Reynolds Joyce K. Reynolds is a computer scientist.Reynolds holds bachelor's and master's degrees from the University of Southern California, United States. She has been active in the development of the protocols underlying the Internet. In particular, she has authored or co-authored many RFCs, most notably those introducing and specifying the Telnet protocol.Joyce Reynolds served as part of the editorial team of the Request For Comments series from 1987 to 2006, and also performed the IANA function with Jon Postel until this was transferred to ICANN, and worked with ICANN in this role until 2001. Joyce_K._Reynolds
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| Kerberos (protocol) Kerberos is a computer network authentication protocol, which allows nodes communicating over a non-secure network to prove their identity to one another in a secure manner. It is also a suite of free software published by Massachusetts Institute of Technology (MIT) that implements this protocol. Its designers aimed primarily at a client-server model, and it provides mutual authentication eavesdropping and replay attacks. Kerberos_(protocol)
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| Lightweight Directory Access Protocol The Lightweight Directory Access Protocol, or LDAP (), is an application protocol for querying and modifying directory services running over TCP/IP.A directory is a set of objects with attributes organized in a logical and hierarchical manner. The most common example is the telephone directory, which consists of a series of names (either of persons or organizations) organized alphabetically, with each name having an address and phone number attached. Lightweight_Directory_Access_Protocol
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| Lightweight Directory Access Protocol Talk:Lightweight_Directory_Access_Protocol
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| MIME Multipurpose Internet Mail Extensions (MIME) is an Internet standard that extends the format of e-mail to support Text in character sets other than ASCII Non-text attachments Message bodies with multiple parts Header information in non-ASCII character sets MIME's use, however, has grown beyond describing the content of e-mail to describing content type in general, including for the web (see Internet media type). MIME
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| MPEG-4 MPEG-4 is a patented collection of methods defining compression of audio and visual (AV) digital data. It was introduced in late 1998 and designated a standard for a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) under the formal standard ISO/IEC 14496. Uses of MPEG-4 include compression of AV data for web (streaming media) and CD distribution, voice (telephone, videophone) and broadcast television applications. MPEG-4
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| Multicast Multicast addressing is a network technology for the delivery of information to a group of destinations simultaneously using the most efficient strategy to deliver the messages over each link of the network only once, creating copies only when the links to the multiple destinations split. Multicast
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| Multiprotocol Label Switching MPLS redirects here. For other uses, see MplsIn computer networking and telecommunications, Multiprotocol Label Switching (MPLS) refers to a mechanism which directs and transfers data between Wide Area Networks (WANs) nodes with high performance, regardless of the content of the data. MPLS makes it easy to create "virtual links" between nodes on the network, regardless of the protocol of their encapsulated data. Multiprotocol_Label_Switching
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| Mail transfer agent mail transfer agent (MTA) (also called a mail transport agent, message transfer agent, or smtpd (short for SMTP daemon), is a computer program or software agent that transfers electronic mail messages from one computer to another.The term mail server is also used to mean a computer acting as an MTA that is running the appropriate software. Mail_transfer_agent
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| Ogg Ogg is a free, open standard container format maintained by the Xiph.Org Foundation. The creators of the Ogg format claim that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high quality digital multimedia.The name ‘Ogg’ refers to the file format which can multiplex a number of separate independent free and open source codecs for audio, video, text (such as subtitles), and metadata. Ogg
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| OSI model Talk:OSI_model
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| Pretty Good Privacy Pretty Good Privacy (PGP) is a computer program that provides cryptographic privacy and authentication. PGP is often used for signing, encrypting and decrypting e-mails to increase the security of e-mail communications. It was originally created by Philip Zimmermann in 1991.PGP and other similar products follow the OpenPGP standard (RFC 4880) for encrypting and decrypting data. Pretty_Good_Privacy
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| Point-to-Point Protocol In networking, the Point-to-Point Protocol, or PPP, is a data link protocol commonly used to establish a direct connection between two networking nodes. It can provide connection authentication, transmission encryption privacy, and compression.PPP is used over many types of physical networks including serial cable, phone line, trunk line, cellular telephone, specialized radio links, and fiber optic links such as SONET. Point-to-Point_Protocol
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| QuickTime QuickTime is a multimedia framework developed by Apple Inc., capable of handling various formats of digital video, media clips, sound, text, animation, music, and interactive panoramic images. It is available for Mac OS (Mac OS 9, 8, 7, etc.), Mac OS X and Microsoft Windows operating systems. The latest version is 7.6. QuickTime
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| Request for Comments In computer network engineering, a Request for Comments (RFC) is a memorandum published by the Internet Engineering Task Force (IETF) describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems.Through the Internet Society, engineers and computer scientists may publish discourse in the form of an RFC, either for peer review or simply to convey new concepts, information, or (occasionally) engineering humor. Request_for_Comments
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| Router router ( in the USA and Australia, Router
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| SHA hash functions The SHA hash functions are a set of cryptographic hash functions designed by the National Security Agency (NSA) and published by the NIST as a U.S. Federal Information Processing Standard. SHA stands for Secure Hash Algorithm. The three SHA algorithms are structured differently and are distinguished as SHA-0, SHA-1, and SHA-2. The SHA-2 family uses an identical algorithm with a variable digest size which is distinguished as SHA-224, SHA-256, SHA-384, and SHA-512. SHA_hash_functions
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| Simple Mail Transfer Protocol Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. SMTP was first defined in RFC 821 (STD 10), and last updated by RFC 5321 (2008) which includes the extended SMTP (ESMTP) additions, and is the protocol in widespread use today.While electronic mail servers and other mail transfer agents use SMTP to send and receive mail messages, user-level client mail applications typically only use SMTP for sending messages to a mail server for relaying. Simple_Mail_Transfer_Protocol
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| Spam (electronic) Talk:Spam_(electronic)
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| Session Initiation Protocol The Session Initiation Protocol (SIP) is a signalling protocol, widely used for setting up and tearing down multimedia communication sessions such as voice and video calls over Internet Protocol (IP). Other feasible application examples include video conferencing, streaming multimedia distribution, instant messaging, presence information and online games. Session_Initiation_Protocol
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| Session Description Protocol The Session Description Protocol (SDP) is a format for describing streaming media initialization parameters in an ASCII string. The IETF published the original specification as an IETF Proposed Standard in April 1998, and subsequently published a revised specification as an IETF Proposed Standard as RFC 4566 in July 2006.SDP is intended for describing multimedia communication sessions for the purposes of session announcement, session invitation, and parameter negotiation. Session_Description_Protocol
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| Secure Shell Secure Shell or SSH is a network protocol that allows data to be exchanged using a secure channel between two networked devices. Linux and Unix based systems to access shell accounts, SSH was designed as a replacement for Telnet and other insecure remote shells, which send information, notably passwords, in plaintext, leaving them open for interception. The encryption used by SSH provides confidentiality and integrity of data over an insecure network, such as the Internet. Secure_Shell
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| Signature block A signature block (often abbreviated as signature, sig block, sig file, .sig, dot sig, siggy, or just sig) is a block of text automatically appended at the bottom of an e-mail message, Usenet article, or forum post. This has the effect of "signing off" the message and in a reply message of indicating that no more response follows. Signature_block
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| Transmission Control Protocol Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP is one of the two original components, with Internet Protocol (IP), of the suite, so that the entire suite is commonly referred to as TCP/IP. Whereas IP handles lower-level transmissions from computer to computer as a message makes its way across the Internet, TCP operates at a higher level, concerned only with the two end systems, for example, a Web browser and a Web server. Transmission_Control_Protocol
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| Top-level domain A top-level domain or domain name (TLD) is the highest level of domain names in the root zone of the Domain Name System of the Internet. For all domains in lower levels, it is the last part of the domain name, that is, the label that follows the last dot of a fully qualified domain name. Top-level_domain
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| UTF-8 UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is able to represent any character in the Unicode standard, yet is backwards compatible with ASCII. For these reasons, it is steadily becoming the preferred encoding for e-mail, web pages, and other places where characters are stored or streamed.UTF-8 encodes each character (code point) in 1 to 4 octets (8-bit bytes), with the single octet encoding used only for the 128 US-ASCII characters. UTF-8
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| Uniform Resource Locator In computing, a Uniform Resource Locator (URL) is a type of Uniform Resource Identifier (URI) that specifies where an identified resource is available and the mechanism for retrieving it. In popular usage and in many technical documents and verbal discussions it is often incorrectly used as a synonym for URI. In popular language, a URL is also referred to as a Web address. Uniform_Resource_Locator
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